Impeller-pump.



H. G. JOHNSTON.

IMPELLER PUMP.

APPLICATION FILED NOV.19, 1912 1390 1066 Patented Mar. 10, 1914 2 SHEETS-S11EETL G. JOHNSTON.

- IMPELLBR PUMP.

APPLICATION FILED NOV, m, m?

Patented Mar. 10. 1914.

I wumu/ @nucmhw owmec 10km 0 abbey/1w PATENT OFFIGE.

HORACE G. JOHNSTON, OF CORSICANA, TEXAS.

v IMPELLER-PUMP.

Specification of Letters Patent.

Patented Mar. 1'O, 1914.

Application filed November 19, 1912. Serial No. 782,350.

To aLL whom it may concern Be it khown that. I, HORACE G. J oinvs'ron, a citizen of the United States, residing at Corsicana. in the county of Navarro and State of Texas, have invented certain new and useful Improvements in Impeller- Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to impeller pumps and has for an object to provide a pump embodying a new and improved form of impeller.

A further object of the invention is to provide a pump embodying a self-contained section having a propeller and cooperating parts, each section being independent from other sections except in the matter of driving. v

A further object of the invention is to provide self-contained impeller units being similar excepting the extreme unit. such units being capable of being connected up in any desired number.

A further object of the invention is to provide an improved supporting head for the impeller pump with improved means for withdrawing the line of pipe without; removing the head.

A further object of the invention is to provide improved means for connecting the several unlts.

A further object of the invention is to provide an improved, liner for the units with improved means for retaining such liner in operative position.

With these and other objects in view the invention comprises certain novel constructions, combinations and arrangcmei'it of parts as will he hereinafter.more fully de scribed and clain'ied.

in the drawings: Figure 1 is a view of an impeller pump made up ofa number of units seen partly in side elevat on and partly in section. Fig 2 is an enlarged diametrical sectional view of the head. Fig. 3 is a diametri al sectional view of one of the units.

l igr. a top plan view, of one of the couplim forming a part of one of the units. Pie. 3 is a view in perspective ot one of the in'ipcllers. Fig. (3 is a view in perspective. of a clutch for operating the impeller shown at, Fig. Fig. T is anew 1n perspective of a fragment the hub of one of theimpellers showing a slightly different means for attaching the shutting. Fig. 8 is a view in perspective of a section of shafting and it'orn'is the subject matter of this application comprises a plurality of units shown as a whole at 10. The units COlllpllEQ each a coupling 11 shown in enlai'gcd detail at Fig. 3 screw threaded at the lower end to receive the pipe section 12 and provided above such pipe section with blades 13 forming a spider having a bearing box 1st centrallv thereof. The lower end of the bearing box is provided with a follower 15 which together with. the packing 16 forms a stuttinp; box for engaging the shaft 17 to prevent the passage of water and contained matter about the shaft into the bearing.

Above the spider an inupellen is mounted con'l'prising a hub 18, one or more fins l9 and an embracing and surrounding cylindrical band 20. \Vithin the bearing box 14 a wood tiller 331 is inserted, the bearing, box and wood filler hein so proportioned that the hub 18 of the impeller abuts upon such wood tiller as a thrust-bearing. In practice it is 't'ound desirable to employ some exceed ingly hard and comparatively non-porous wood such for instance as lignum vita". although the present. invention is not restricted to the use of such wood.

About the circumfcrential band 20 of the impeller a liner 22 is employed such liner being: composed of some flexible or elastic material such as leather, rubber or the like. In operation, the cylindrical band 20 would run in cmnparatively close relation to such liner 22, a space being shown in the drawings simply to indicate that were isopportunitv for movement between the parts. The liner 22 rests upon an annular shoulder 23 in the coupling 11 with a follower Q-l screwed into the end. of the coupling- 11 to hold such liner in position. The follower 94: is provided with blades 24: radially extending from the periphery hut stopping short efthe hub18 with their lower ends curved as indicated at 24' so that the Water in its rotary movement impinges against the convex sides of said blades.

The follower 2i screw threaded to receive the lower end of the pipe so that when the impellcnqunit is in position in a line-of pipe the parts are associated as shown at. Fig. T he impeller unit however, consists of the coimling the spider, the propeller and the shaft and pipe connected at the bottom of the coupling. The shaft from above i connected with the hub of the impeller in such manner as to insure rotation.

of the. impeller with the shaft but to perniit longitudinal sliding movement. As shown at Fig. 3 the shaft 17 is provided with a key 26 whereby the shaft is splined into the hub. as; shown at Figs. and (3 the hub is provided with a diametrical slot 27 and the shaft 1? is provided with a collar 28 rigidly secured thcreto having wings :29 proportioned to tit into the slot 27 with the extremity 1 T serving as a guide to enter first the central bore 30 of the hub. Instead of employing a hub and clutch such as shown at." and 6, however, the ordinary dental clutch may. be employed as shown at Figs. 7 aild S, the collar 31 being provided with lugs 32 complementary to the lugs 33 carried upon the impeller huh the extremity 17 of he shaft serving a guide as above described relatively to and 6. I Below the lower unit 10 I any sort of strainer e:trunity, as indicated conventionally at 34: and pipe section 35 in Fig. 1 may be employed and the top unit is provided with a pipe section which connects such top unitavith the head shown at detail in Such head comprises a base 37 which is rigidly and permanently secured to the well or other covering indicated at 38 and is annular in form having a flange 39 with central opening through which the top section of the pipe 36 is inserted. T he top section or" pipe is provided with a threaded collar 40 having a flange l-l proportioned to bear upon the annular flange 39 with a gasket 42 introduced between the flange to produce a water-tight joint. Above the base 37 a housing 43 is erected having a discharge connection and a cover member d5. The cover member is provided with a bearing 46 through which the shaft 1'? extends with a stufing box d7 provided to produce a watertightjoint. Upon the upper end of the shaft 1''? a pulley L8 is employed by which power is transmitted to the shaft 17 and the several units connected therewith below the head. To remove the connected units it will not be necessary, therefore. to remove the entire head but the cover member is removed by the removal of the. bolts "9 and the reval of such cover carries with it the top .tion 17 otth-e l it. A. short length o l pipe is now inserted into the housi and Fig.

inserted into the threaded ring 40, such. length of pipe extending above the housing in position to engage the grappling and lifting appliances. The connected units are lifted by such lifting device until the first unit is above the housing whereupon it is unscrewed and removed and the lifting process continued until all of the units have beenremoved from the housing. I I

To secure access to thestufling box 47 a cover 50 is secured upon the housing in th usual well known manner.

About the bearing 46 a boss 51 is provided producing a chamber 52 between such boss and bearing-box, the walls of the boss being higher than the top of the bearing box so that oil contained within the chamber 52 is in position to lubricate the bearing. To supply lubricant ,to the chamber 52 the cover 45 is providedwith a passage 53 which extends from theperiphery of such cover to the bearing 46 with a lateral 54 leading to the chamber 52. Any convenient way of supplying oil to the passage may be employed, here shown conventionally as a pipe 55'and oil cup 56. It will be apparent that even when the oil in the chamber is lower than the top of the bearing 46 oil will still feed through the lateral 54 111161 the passage 53' into the bearing. p

In operation the head will be located over the pumping position, the cover 45 removed and units coupled together and inserted through such housing until the lower unit has been inserted a suflicient and desired distance into the water when the cover will be placed in position with the top shaft section engaging the first unit and the power applied which will, as will be apparent, rotate the impellers in all otthe several units forcing water upwardly, as indicated byjche several arrows the spider. blades 13 and 2d serving to prevent undue rotation of the water within the pipe and presenting the water to each impeller moving substantially longitudinally of the pipe until discharged. It will be apparent also that ,the members of each unit will be carried and supported wholly upon the coupling of that particular unit so that the shaftsection connected with the pulley d8 is not required to support the entire line of shaft with its associated impellers as is done in ordinary impeller pump construction. It. will be apparent also that the several units are wholly interch'angeable and that more or less units may be added or taken away as circumstances may require by the simpleproces of removing a unit or removing the top pipe section 36 and adding a unit.

I claim:

1. In a pump, a unit comprising a cou' pling, a spider within the coupling. an im pcller mounted to rotate upon the spider. a liner rigidly"connected with thewalls of the coupling and surrount'ling the impeller, and a pipe and shaft CXlIClltllIifJ below the coupling.

. an impeller mounted above the bearing and comprising a hub abutting the bearing mem her, and means carried by the hub for slidably engaging a su ierposed shaft. said bearing box having a bore of substantially the same diameter as the hub and said bearing member being of correspmuling diameter.

3. In a pump, a coupling. a rigidly mounted liner countersunk from the inner wall of the coupling, and an impeller mounted to rotate adjacent the liner, sucn impeller comprising a cylindrical band and a fin within the band.

at. In a pump, a rigid structure comprising atube, a. tubular coupling member con nected therewith, and a liner havhng an uninterrupted bore mounted within the coupling; an impeller mrmitting the passage of fluid theretln'ough, and including an outer tubular portion 1 the diameter of the tube and liner and movable independently and longitudinally thereof.

5. In a device of the class described, a pump cylinder con'iprising a pipe couplingprovided upon its intcrior with an annular shoulder, a flexible liner disposed within the coupling and resting upon the shoulder and a follower inserted into the coupling and engaging the liner, the inner walls of the liner, follower and shoulder forming a substantially continuous surface.

(5. In a device of the class described, a pump cylinder comprising a pipe coupling having an annular shoulder extending interiorly of the coupling, a liner composed aving approximately .offloXiblo material within the coupling and bearing upon the shoulder at one edge, and a. follower inserted into the coupling and bearing against the edge of the liner opposite the shoulder, the inner walls of the liner, follower. and shoulder tially continuous surface.

7. In a pump, a head comprising a base and superposed housing, said base being provided with a central circular aperture, a. ring proportioned to be inserted into .the aperture and having an outstanding flange prtu'un'tioned to bear upon the base and prevent the ring passing through the aperture, said ring being screw threaded internally to engage a pipe section from either end.

8. In a pump, a head comprising a base, a superposed housing and aremovable cover for the housing, with an inwardly extending annular flange producing a central aperture and an internally threaded ring proportioned to be inserted into tha aperture and provided with a. flange proportioned to bear upon the flange of the base, said ring being proportioned to pass through the top of the housing when the cover is removed.

9. In a pump, an impeller member pro-. vided with a hub having a central shaft re- 'Cei\-'ing socket and ab'utments located upon opposite sides of the central aperture in combination with a clutch member having a shaft to engage in the shaft aperture and abutmcnts extending outwardly from the shaft positioned to engage the abutmcnts of the hub.

In testimony whereof I atlix my signature in presence of two witnesses.

HORACE G. JOHNSTON.

Witnesses:

U. L. Justice, 11. F. TRAYLOR.

forming a substansaid base being provided 

